[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.94 by root, Sun Nov 11 01:29:49 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# define EV_USE_MONOTONIC 1
		41	# define EV_USE_REALTIME 1
		42	# endif
		43
		44	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		45	# define EV_USE_SELECT 1
		46	# endif
		47
		48	# if HAVE_POLL && HAVE_POLL_H
		49	# define EV_USE_POLL 1
		50	# endif
		51
		52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		53	# define EV_USE_EPOLL 1
		54	# endif
		55
		56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		57	# define EV_USE_KQUEUE 1
		58	# endif
		59
33	#endif	60	#endif
34		61
35	#include <math.h>	62	#include <math.h>
36	#include <stdlib.h>	63	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	64	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	65	#include <stddef.h>
41		66
42	#include <stdio.h>	67	#include <stdio.h>
43		68
44	#include <assert.h>	69	#include <assert.h>
45	#include <errno.h>	70	#include <errno.h>
46	#include <sys/types.h>	71	#include <sys/types.h>
		72	#include <time.h>
		73
		74	#include <signal.h>
		75
47	#ifndef WIN32	76	#ifndef WIN32
		77	# include <unistd.h>
		78	# include <sys/time.h>
48	# include <sys/wait.h>	79	# include <sys/wait.h>
49	#endif	80	#endif
50	#include <sys/time.h>
51	#include <time.h>
52
53	/**/	81	/**/
54		82
55	#ifndef EV_USE_MONOTONIC	83	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	84	# define EV_USE_MONOTONIC 1
57	#endif	85	#endif
58		86
59	#ifndef EV_USE_SELECT	87	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	88	# define EV_USE_SELECT 1
61	#endif	89	#endif
62		90
63	#ifndef EV_USEV_POLL	91	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	93	#endif
66		94
67	#ifndef EV_USE_EPOLL	95	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	96	# define EV_USE_EPOLL 0
69	#endif	97	#endif
70		98
71	#ifndef EV_USE_KQUEUE	99	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	100	# define EV_USE_KQUEUE 0
		101	#endif
		102
		103	#ifndef EV_USE_WIN32
		104	# ifdef WIN32
		105	# define EV_USE_WIN32 0 /* it does not exist, use select */
		106	# undef EV_USE_SELECT
		107	# define EV_USE_SELECT 1
		108	# else
		109	# define EV_USE_WIN32 0
		110	# endif
73	#endif	111	#endif
74		112
75	#ifndef EV_USE_REALTIME	113	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	114	# define EV_USE_REALTIME 1
77	#endif	115	#endif
…		…
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	134	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		135
98	#ifndef EV_EMBED	136	#ifdef EV_H
		137	# include EV_H
		138	#else
99	# include "ev.h"	139	# include "ev.h"
100	#endif	140	#endif
101		141
102	#if __GNUC__ >= 3	142	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	143	# define expect(expr,value) __builtin_expect ((expr),(value))
…		…
117	typedef struct ev_watcher_list *WL;	157	typedef struct ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	158	typedef struct ev_watcher_time *WT;
119		159
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		161
		162	#include "ev_win32.c"
		163
122	/*****************************************************************************/	164	/*****************************************************************************/
123		165
		166	static void (syserr_cb)(const char msg);
		167
		168	void ev_set_syserr_cb (void (cb)(const char msg))
		169	{
		170	syserr_cb = cb;
		171	}
		172
		173	static void
		174	syserr (const char *msg)
		175	{
		176	if (!msg)
		177	msg = "(libev) system error";
		178
		179	if (syserr_cb)
		180	syserr_cb (msg);
		181	else
		182	{
		183	perror (msg);
		184	abort ();
		185	}
		186	}
		187
		188	static void (alloc)(void *ptr, long size);
		189
		190	void ev_set_allocator (void (cb)(void *ptr, long size))
		191	{
		192	alloc = cb;
		193	}
		194
		195	static void *
		196	ev_realloc (void *ptr, long size)
		197	{
		198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		199
		200	if (!ptr && size)
		201	{
		202	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		203	abort ();
		204	}
		205
		206	return ptr;
		207	}
		208
		209	#define ev_malloc(size) ev_realloc (0, (size))
		210	#define ev_free(ptr) ev_realloc ((ptr), 0)
		211
		212	/*****************************************************************************/
		213
124	typedef struct	214	typedef struct
125	{	215	{
126	struct ev_watcher_list *head;	216	WL head;
127	unsigned char events;	217	unsigned char events;
128	unsigned char reify;	218	unsigned char reify;
129	} ANFD;	219	} ANFD;
130		220
131	typedef struct	221	typedef struct
…		…
134	int events;	224	int events;
135	} ANPENDING;	225	} ANPENDING;
136		226
137	#if EV_MULTIPLICITY	227	#if EV_MULTIPLICITY
138		228
139	struct ev_loop	229	struct ev_loop
140	{	230	{
		231	ev_tstamp ev_rt_now;
141	# define VAR(name,decl) decl;	232	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	233	#include "ev_vars.h"
143	};
144	# undef VAR	234	#undef VAR
		235	};
145	# include "ev_wrap.h"	236	#include "ev_wrap.h"
		237
		238	struct ev_loop default_loop_struct;
		239	static struct ev_loop *default_loop;
146		240
147	#else	241	#else
148		242
		243	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	244	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	245	#include "ev_vars.h"
151	# undef VAR	246	#undef VAR
		247
		248	static int default_loop;
152		249
153	#endif	250	#endif
154		251
155	/*****************************************************************************/	252	/*****************************************************************************/
156		253
157	inline ev_tstamp	254	ev_tstamp
158	ev_time (void)	255	ev_time (void)
159	{	256	{
160	#if EV_USE_REALTIME	257	#if EV_USE_REALTIME
161	struct timespec ts;	258	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	259	clock_gettime (CLOCK_REALTIME, &ts);
…		…
181	#endif	278	#endif
182		279
183	return ev_time ();	280	return ev_time ();
184	}	281	}
185		282
		283	#if EV_MULTIPLICITY
186	ev_tstamp	284	ev_tstamp
187	ev_now (EV_P)	285	ev_now (EV_P)
188	{	286	{
189	return rt_now;	287	return ev_rt_now;
190	}	288	}
		289	#endif
191		290
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	291	#define array_roundsize(type,n) ((n) \| 4 & ~3)
193		292
194	#define array_needsize(base,cur,cnt,init) \	293	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	294	if (expect_false ((cnt) > cur)) \
196	{ \	295	{ \
197	int newcnt = cur; \	296	int newcnt = cur; \
198	do \	297	do \
199	{ \	298	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	299	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	300	} \
202	while ((cnt) > newcnt); \	301	while ((cnt) > newcnt); \
203	\	302	\
204	base = realloc (base, sizeof (base) (newcnt)); \	303	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	304	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	305	cur = newcnt; \
207	}	306	}
		307
		308	#define array_slim(type,stem) \
		309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		310	{ \
		311	stem ## max = array_roundsize (stem ## cnt >> 1); \
		312	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		314	}
		315
		316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		318	#define array_free_microshit(stem) \
		319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		320
		321	#define array_free(stem, idx) \
		322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
208		323
209	/*****************************************************************************/	324	/*****************************************************************************/
210		325
211	static void	326	static void
212	anfds_init (ANFD *base, int count)	327	anfds_init (ANFD *base, int count)
…		…
219		334
220	++base;	335	++base;
221	}	336	}
222	}	337	}
223		338
224	static void	339	void
225	event (EV_P_ W w, int events)	340	ev_feed_event (EV_P_ void *w, int revents)
226	{	341	{
		342	W w_ = (W)w;
		343
227	if (w->pending)	344	if (w_->pending)
228	{	345	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	346	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
230	return;	347	return;
231	}	348	}
232		349
233	w->pending = ++pendingcnt [ABSPRI (w)];	350	w_->pending = ++pendingcnt [ABSPRI (w_)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
235	pendings [ABSPRI (w)][w->pending - 1].w = w;	352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;	353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
237	}	354	}
238		355
239	static void	356	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)	357	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{	358	{
242	int i;	359	int i;
243		360
244	for (i = 0; i < eventcnt; ++i)	361	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);	362	ev_feed_event (EV_A_ events [i], type);
246	}	363	}
247		364
248	static void	365	inline void
249	fd_event (EV_P_ int fd, int events)	366	fd_event (EV_P_ int fd, int revents)
250	{	367	{
251	ANFD *anfd = anfds + fd;	368	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	369	struct ev_io *w;
253		370
254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	{	372	{
256	int ev = w->events & events;	373	int ev = w->events & revents;
257		374
258	if (ev)	375	if (ev)
259	event (EV_A_ (W)w, ev);	376	ev_feed_event (EV_A_ (W)w, ev);
260	}	377	}
		378	}
		379
		380	void
		381	ev_feed_fd_event (EV_P_ int fd, int revents)
		382	{
		383	fd_event (EV_A_ fd, revents);
261	}	384	}
262		385
263	/*****************************************************************************/	386	/*****************************************************************************/
264		387
265	static void	388	static void
…		…
278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	401	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
279	events \|= w->events;	402	events \|= w->events;
280		403
281	anfd->reify = 0;	404	anfd->reify = 0;
282		405
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	406	method_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	407	anfd->events = events;
287	}
288	}	408	}
289		409
290	fdchangecnt = 0;	410	fdchangecnt = 0;
291	}	411	}
292		412
293	static void	413	static void
294	fd_change (EV_P_ int fd)	414	fd_change (EV_P_ int fd)
295	{	415	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	416	if (anfds [fd].reify)
297	return;	417	return;
298		418
299	anfds [fd].reify = 1;	419	anfds [fd].reify = 1;
300		420
301	++fdchangecnt;	421	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
303	fdchanges [fdchangecnt - 1] = fd;	423	fdchanges [fdchangecnt - 1] = fd;
304	}	424	}
305		425
306	static void	426	static void
307	fd_kill (EV_P_ int fd)	427	fd_kill (EV_P_ int fd)
…		…
309	struct ev_io *w;	429	struct ev_io *w;
310		430
311	while ((w = (struct ev_io *)anfds [fd].head))	431	while ((w = (struct ev_io *)anfds [fd].head))
312	{	432	{
313	ev_io_stop (EV_A_ w);	433	ev_io_stop (EV_A_ w);
314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	434	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
315	}	435	}
		436	}
		437
		438	static int
		439	fd_valid (int fd)
		440	{
		441	#ifdef WIN32
		442	return !!win32_get_osfhandle (fd);
		443	#else
		444	return fcntl (fd, F_GETFD) != -1;
		445	#endif
316	}	446	}
317		447
318	/* called on EBADF to verify fds */	448	/* called on EBADF to verify fds */
319	static void	449	static void
320	fd_ebadf (EV_P)	450	fd_ebadf (EV_P)
321	{	451	{
322	int fd;	452	int fd;
323		453
324	for (fd = 0; fd < anfdmax; ++fd)	454	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	455	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	456	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	457	fd_kill (EV_A_ fd);
328	}	458	}
329		459
330	/* called on ENOMEM in select/poll to kill some fds and retry */	460	/* called on ENOMEM in select/poll to kill some fds and retry */
331	static void	461	static void
332	fd_enomem (EV_P)	462	fd_enomem (EV_P)
333	{	463	{
334	int fd = anfdmax;	464	int fd;
335		465
336	while (fd--)	466	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	467	if (anfds [fd].events)
338	{	468	{
339	close (fd);
340	fd_kill (EV_A_ fd);	469	fd_kill (EV_A_ fd);
341	return;	470	return;
342	}	471	}
343	}	472	}
344		473
345	/* susually called after fork if method needs to re-arm all fds from scratch */	474	/* usually called after fork if method needs to re-arm all fds from scratch */
346	static void	475	static void
347	fd_rearm_all (EV_P)	476	fd_rearm_all (EV_P)
348	{	477	{
349	int fd;	478	int fd;
350		479
351	/* this should be highly optimised to not do anything but set a flag */	480	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	481	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	482	if (anfds [fd].events)
354	{	483	{
355	anfds [fd].events = 0;	484	anfds [fd].events = 0;
356	fd_change (fd);	485	fd_change (EV_A_ fd);
357	}	486	}
358	}	487	}
359		488
360	/*****************************************************************************/	489	/*****************************************************************************/
361		490
…		…
365	WT w = heap [k];	494	WT w = heap [k];
366		495
367	while (k && heap [k >> 1]->at > w->at)	496	while (k && heap [k >> 1]->at > w->at)
368	{	497	{
369	heap [k] = heap [k >> 1];	498	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	499	((W)heap [k])->active = k + 1;
371	k >>= 1;	500	k >>= 1;
372	}	501	}
373		502
374	heap [k] = w;	503	heap [k] = w;
375	heap [k]->active = k + 1;	504	((W)heap [k])->active = k + 1;
376		505
377	}	506	}
378		507
379	static void	508	static void
380	downheap (WT *heap, int N, int k)	509	downheap (WT *heap, int N, int k)
…		…
390		519
391	if (w->at <= heap [j]->at)	520	if (w->at <= heap [j]->at)
392	break;	521	break;
393		522
394	heap [k] = heap [j];	523	heap [k] = heap [j];
395	heap [k]->active = k + 1;	524	((W)heap [k])->active = k + 1;
396	k = j;	525	k = j;
397	}	526	}
398		527
399	heap [k] = w;	528	heap [k] = w;
400	heap [k]->active = k + 1;	529	((W)heap [k])->active = k + 1;
		530	}
		531
		532	inline void
		533	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		534	{
		535	ev_tstamp old_at = heap [k]->at;
		536	heap [k]->at = at;
		537
		538	if (old_at < at)
		539	downheap (heap, N, k);
		540	else
		541	upheap (heap, k);
401	}	542	}
402		543
403	/*****************************************************************************/	544	/*****************************************************************************/
404		545
405	typedef struct	546	typedef struct
406	{	547	{
407	struct ev_watcher_list *head;	548	WL head;
408	sig_atomic_t volatile gotsig;	549	sig_atomic_t volatile gotsig;
409	} ANSIG;	550	} ANSIG;
410		551
411	static ANSIG *signals;	552	static ANSIG *signals;
412	static int signalmax;	553	static int signalmax;
413		554
414	static int sigpipe [2];	555	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	556	static sig_atomic_t volatile gotsig;
		557	static struct ev_io sigev;
416		558
417	static void	559	static void
418	signals_init (ANSIG *base, int count)	560	signals_init (ANSIG *base, int count)
419	{	561	{
420	while (count--)	562	while (count--)
…		…
427	}	569	}
428		570
429	static void	571	static void
430	sighandler (int signum)	572	sighandler (int signum)
431	{	573	{
		574	#if WIN32
		575	signal (signum, sighandler);
		576	#endif
		577
432	signals [signum - 1].gotsig = 1;	578	signals [signum - 1].gotsig = 1;
433		579
434	if (!gotsig)	580	if (!gotsig)
435	{	581	{
436	int old_errno = errno;	582	int old_errno = errno;
437	gotsig = 1;	583	gotsig = 1;
		584	#ifdef WIN32
		585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		586	#else
438	write (sigpipe [1], &signum, 1);	587	write (sigpipe [1], &signum, 1);
		588	#endif
439	errno = old_errno;	589	errno = old_errno;
440	}	590	}
441	}	591	}
442		592
		593	void
		594	ev_feed_signal_event (EV_P_ int signum)
		595	{
		596	WL w;
		597
		598	#if EV_MULTIPLICITY
		599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		600	#endif
		601
		602	--signum;
		603
		604	if (signum < 0 \|\| signum >= signalmax)
		605	return;
		606
		607	signals [signum].gotsig = 0;
		608
		609	for (w = signals [signum].head; w; w = w->next)
		610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		611	}
		612
443	static void	613	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	614	sigcb (EV_P_ struct ev_io *iow, int revents)
445	{	615	{
446	struct ev_watcher_list *w;
447	int signum;	616	int signum;
448		617
		618	#ifdef WIN32
		619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		620	#else
449	read (sigpipe [0], &revents, 1);	621	read (sigpipe [0], &revents, 1);
		622	#endif
450	gotsig = 0;	623	gotsig = 0;
451		624
452	for (signum = signalmax; signum--; )	625	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	626	if (signals [signum].gotsig)
454	{	627	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;
456
457	for (w = signals [signum].head; w; w = w->next)
458	event (EV_A_ (W)w, EV_SIGNAL);
459	}
460	}	628	}
461		629
462	static void	630	static void
463	siginit (EV_P)	631	siginit (EV_P)
464	{	632	{
…		…
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	644	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	645	}
478		646
479	/*****************************************************************************/	647	/*****************************************************************************/
480		648
		649	static struct ev_child *childs [PID_HASHSIZE];
		650
481	#ifndef WIN32	651	#ifndef WIN32
		652
		653	static struct ev_signal childev;
482		654
483	#ifndef WCONTINUED	655	#ifndef WCONTINUED
484	# define WCONTINUED 0	656	# define WCONTINUED 0
485	#endif	657	#endif
486		658
…		…
490	struct ev_child *w;	662	struct ev_child *w;
491		663
492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	664	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
493	if (w->pid == pid \|\| !w->pid)	665	if (w->pid == pid \|\| !w->pid)
494	{	666	{
495	w->priority = sw->priority; /* need to do it now */	667	ev_priority (w) = ev_priority (sw); /* need to do it now */
496	w->rpid = pid;	668	w->rpid = pid;
497	w->rstatus = status;	669	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);	670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
499	}	671	}
500	}	672	}
501		673
502	static void	674	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	675	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
505	int pid, status;	677	int pid, status;
506		678
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	679	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	680	{
509	/* make sure we are called again until all childs have been reaped */	681	/* make sure we are called again until all childs have been reaped */
510	event (EV_A_ (W)sw, EV_SIGNAL);	682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		683
512	child_reap (EV_A_ sw, pid, pid, status);	684	child_reap (EV_A_ sw, pid, pid, status);
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
514	}	686	}
515	}	687	}
…		…
522	# include "ev_kqueue.c"	694	# include "ev_kqueue.c"
523	#endif	695	#endif
524	#if EV_USE_EPOLL	696	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	697	# include "ev_epoll.c"
526	#endif	698	#endif
527	#if EV_USEV_POLL	699	#if EV_USE_POLL
528	# include "ev_poll.c"	700	# include "ev_poll.c"
529	#endif	701	#endif
530	#if EV_USE_SELECT	702	#if EV_USE_SELECT
531	# include "ev_select.c"	703	# include "ev_select.c"
532	#endif	704	#endif
…		…
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	745	have_monotonic = 1;
574	}	746	}
575	#endif	747	#endif
576		748
577	rt_now = ev_time ();	749	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	750	mn_now = get_clock ();
579	now_floor = mn_now;	751	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	752	rtmn_diff = ev_rt_now - mn_now;
581		753
582	if (methods == EVMETHOD_AUTO)	754	if (methods == EVMETHOD_AUTO)
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))	755	if (!enable_secure () && getenv ("LIBEV_METHODS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	756	methods = atoi (getenv ("LIBEV_METHODS"));
585	else	757	else
586	methods = EVMETHOD_ANY;	758	methods = EVMETHOD_ANY;
587		759
588	method = 0;	760	method = 0;
		761	#if EV_USE_WIN32
		762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		763	#endif
589	#if EV_USE_KQUEUE	764	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
591	#endif	766	#endif
592	#if EV_USE_EPOLL	767	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
594	#endif	769	#endif
595	#if EV_USEV_POLL	770	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
597	#endif	772	#endif
598	#if EV_USE_SELECT	773	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
600	#endif	775	#endif
		776
		777	ev_init (&sigev, sigcb);
		778	ev_set_priority (&sigev, EV_MAXPRI);
601	}	779	}
602	}	780	}
603		781
604	void	782	void
605	loop_destroy (EV_P)	783	loop_destroy (EV_P)
606	{	784	{
		785	int i;
		786
		787	#if EV_USE_WIN32
		788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		789	#endif
607	#if EV_USE_KQUEUE	790	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
609	#endif	792	#endif
610	#if EV_USE_EPOLL	793	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
612	#endif	795	#endif
613	#if EV_USEV_POLL	796	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
615	#endif	798	#endif
616	#if EV_USE_SELECT	799	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
618	#endif	801	#endif
619		802
		803	for (i = NUMPRI; i--; )
		804	array_free (pending, [i]);
		805
		806	/* have to use the microsoft-never-gets-it-right macro */
		807	array_free_microshit (fdchange);
		808	array_free_microshit (timer);
		809	#if EV_PERIODICS
		810	array_free_microshit (periodic);
		811	#endif
		812	array_free_microshit (idle);
		813	array_free_microshit (prepare);
		814	array_free_microshit (check);
		815
620	method = 0;	816	method = 0;
621	/TODO/
622	}	817	}
623		818
624	void	819	static void
625	loop_fork (EV_P)	820	loop_fork (EV_P)
626	{	821	{
627	/TODO/
628	#if EV_USE_EPOLL	822	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	823	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
630	#endif	824	#endif
631	#if EV_USE_KQUEUE	825	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	826	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
633	#endif	827	#endif
		828
		829	if (ev_is_active (&sigev))
		830	{
		831	/* default loop */
		832
		833	ev_ref (EV_A);
		834	ev_io_stop (EV_A_ &sigev);
		835	close (sigpipe [0]);
		836	close (sigpipe [1]);
		837
		838	while (pipe (sigpipe))
		839	syserr ("(libev) error creating pipe");
		840
		841	siginit (EV_A);
		842	}
		843
		844	postfork = 0;
634	}	845	}
635		846
636	#if EV_MULTIPLICITY	847	#if EV_MULTIPLICITY
637	struct ev_loop *	848	struct ev_loop *
638	ev_loop_new (int methods)	849	ev_loop_new (int methods)
639	{	850	{
640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	851	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		852
		853	memset (loop, 0, sizeof (struct ev_loop));
641		854
642	loop_init (EV_A_ methods);	855	loop_init (EV_A_ methods);
643		856
644	if (ev_methods (EV_A))	857	if (ev_method (EV_A))
645	return loop;	858	return loop;
646		859
647	return 0;	860	return 0;
648	}	861	}
649		862
650	void	863	void
651	ev_loop_destroy (EV_P)	864	ev_loop_destroy (EV_P)
652	{	865	{
653	loop_destroy (EV_A);	866	loop_destroy (EV_A);
654	free (loop);	867	ev_free (loop);
655	}	868	}
656		869
657	void	870	void
658	ev_loop_fork (EV_P)	871	ev_loop_fork (EV_P)
659	{	872	{
660	loop_fork (EV_A);	873	postfork = 1;
661	}	874	}
662		875
663	#endif	876	#endif
664		877
665	#if EV_MULTIPLICITY	878	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	879	struct ev_loop *
670	#else	880	#else
671	static int default_loop;
672
673	int	881	int
674	#endif	882	#endif
675	ev_default_loop (int methods)	883	ev_default_loop (int methods)
676	{	884	{
677	if (sigpipe [0] == sigpipe [1])	885	if (sigpipe [0] == sigpipe [1])
…		…
688		896
689	loop_init (EV_A_ methods);	897	loop_init (EV_A_ methods);
690		898
691	if (ev_method (EV_A))	899	if (ev_method (EV_A))
692	{	900	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	901	siginit (EV_A);
696		902
697	#ifndef WIN32	903	#ifndef WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	904	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	905	ev_set_priority (&childev, EV_MAXPRI);
…		…
713	{	919	{
714	#if EV_MULTIPLICITY	920	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	921	struct ev_loop *loop = default_loop;
716	#endif	922	#endif
717		923
		924	#ifndef WIN32
718	ev_ref (EV_A); /* child watcher */	925	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	926	ev_signal_stop (EV_A_ &childev);
		927	#endif
720		928
721	ev_ref (EV_A); /* signal watcher */	929	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	930	ev_io_stop (EV_A_ &sigev);
723		931
724	close (sigpipe [0]); sigpipe [0] = 0;	932	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		934
727	loop_destroy (EV_A);	935	loop_destroy (EV_A);
728	}	936	}
729		937
730	void	938	void
731	ev_default_fork (EV_P)	939	ev_default_fork (void)
732	{	940	{
733	loop_fork (EV_A);	941	#if EV_MULTIPLICITY
		942	struct ev_loop *loop = default_loop;
		943	#endif
734		944
735	ev_io_stop (EV_A_ &sigev);	945	if (method)
736	close (sigpipe [0]);	946	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	947	}
743		948
744	/*****************************************************************************/	949	/*****************************************************************************/
		950
		951	static int
		952	any_pending (EV_P)
		953	{
		954	int pri;
		955
		956	for (pri = NUMPRI; pri--; )
		957	if (pendingcnt [pri])
		958	return 1;
		959
		960	return 0;
		961	}
745		962
746	static void	963	static void
747	call_pending (EV_P)	964	call_pending (EV_P)
748	{	965	{
749	int pri;	966	int pri;
…		…
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		972
756	if (p->w)	973	if (p->w)
757	{	974	{
758	p->w->pending = 0;	975	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	976	EV_CB_INVOKE (p->w, p->events);
760	}	977	}
761	}	978	}
762	}	979	}
763		980
764	static void	981	static void
765	timers_reify (EV_P)	982	timers_reify (EV_P)
766	{	983	{
767	while (timercnt && timers [0]->at <= mn_now)	984	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	985	{
769	struct ev_timer *w = timers [0];	986	struct ev_timer *w = timers [0];
		987
		988	assert (("inactive timer on timer heap detected", ev_is_active (w)));
770		989
771	/* first reschedule or stop timer */	990	/* first reschedule or stop timer */
772	if (w->repeat)	991	if (w->repeat)
773	{	992	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	993	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		994
775	w->at = mn_now + w->repeat;	995	((WT)w)->at += w->repeat;
		996	if (((WT)w)->at < mn_now)
		997	((WT)w)->at = mn_now;
		998
776	downheap ((WT *)timers, timercnt, 0);	999	downheap ((WT *)timers, timercnt, 0);
777	}	1000	}
778	else	1001	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1002	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1003
781	event (EV_A_ (W)w, EV_TIMEOUT);	1004	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1005	}
783	}	1006	}
784		1007
		1008	#if EV_PERIODICS
785	static void	1009	static void
786	periodics_reify (EV_P)	1010	periodics_reify (EV_P)
787	{	1011	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1012	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1013	{
790	struct ev_periodic *w = periodics [0];	1014	struct ev_periodic *w = periodics [0];
791		1015
		1016	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1017
792	/* first reschedule or stop timer */	1018	/* first reschedule or stop timer */
793	if (w->interval)	1019	if (w->reschedule_cb)
794	{	1020	{
		1021	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1022
		1023	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1024	downheap ((WT *)periodics, periodiccnt, 0);
		1025	}
		1026	else if (w->interval)
		1027	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1028	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1029	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1030	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1031	}
799	else	1032	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1033	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1034
802	event (EV_A_ (W)w, EV_PERIODIC);	1035	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1036	}
804	}	1037	}
805		1038
806	static void	1039	static void
807	periodics_reschedule (EV_P)	1040	periodics_reschedule (EV_P)
…		…
811	/* adjust periodics after time jump */	1044	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1045	for (i = 0; i < periodiccnt; ++i)
813	{	1046	{
814	struct ev_periodic *w = periodics [i];	1047	struct ev_periodic *w = periodics [i];
815		1048
		1049	if (w->reschedule_cb)
		1050	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1051	else if (w->interval)
817	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1052	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1053	}
		1054
		1055	/* now rebuild the heap */
		1056	for (i = periodiccnt >> 1; i--; )
		1057	downheap ((WT *)periodics, periodiccnt, i);
829	}	1058	}
		1059	#endif
830		1060
831	inline int	1061	inline int
832	time_update_monotonic (EV_P)	1062	time_update_monotonic (EV_P)
833	{	1063	{
834	mn_now = get_clock ();	1064	mn_now = get_clock ();
835		1065
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1066	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1067	{
838	rt_now = rtmn_diff + mn_now;	1068	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1069	return 0;
840	}	1070	}
841	else	1071	else
842	{	1072	{
843	now_floor = mn_now;	1073	now_floor = mn_now;
844	rt_now = ev_time ();	1074	ev_rt_now = ev_time ();
845	return 1;	1075	return 1;
846	}	1076	}
847	}	1077	}
848		1078
849	static void	1079	static void
…		…
858	{	1088	{
859	ev_tstamp odiff = rtmn_diff;	1089	ev_tstamp odiff = rtmn_diff;
860		1090
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1091	for (i = 4; --i; ) /* loop a few times, before making important decisions */
862	{	1092	{
863	rtmn_diff = rt_now - mn_now;	1093	rtmn_diff = ev_rt_now - mn_now;
864		1094
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1095	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1096	return; /* all is well */
867		1097
868	rt_now = ev_time ();	1098	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1099	mn_now = get_clock ();
870	now_floor = mn_now;	1100	now_floor = mn_now;
871	}	1101	}
872		1102
		1103	# if EV_PERIODICS
873	periodics_reschedule (EV_A);	1104	periodics_reschedule (EV_A);
		1105	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1106	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1107	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1108	}
877	}	1109	}
878	else	1110	else
879	#endif	1111	#endif
880	{	1112	{
881	rt_now = ev_time ();	1113	ev_rt_now = ev_time ();
882		1114
883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1115	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1116	{
		1117	#if EV_PERIODICS
885	periodics_reschedule (EV_A);	1118	periodics_reschedule (EV_A);
		1119	#endif
886		1120
887	/* adjust timers. this is easy, as the offset is the same for all */	1121	/* adjust timers. this is easy, as the offset is the same for all */
888	for (i = 0; i < timercnt; ++i)	1122	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1123	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1124	}
891		1125
892	mn_now = rt_now;	1126	mn_now = ev_rt_now;
893	}	1127	}
894	}	1128	}
895		1129
896	void	1130	void
897	ev_ref (EV_P)	1131	ev_ref (EV_P)
…		…
920	{	1154	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1155	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1156	call_pending (EV_A);
923	}	1157	}
924		1158
		1159	/* we might have forked, so reify kernel state if necessary */
		1160	if (expect_false (postfork))
		1161	loop_fork (EV_A);
		1162
925	/* update fd-related kernel structures */	1163	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1164	fd_reify (EV_A);
927		1165
928	/* calculate blocking time */	1166	/* calculate blocking time */
929		1167
930	/* we only need this for !monotonic clockor timers, but as we basically	1168	/* we only need this for !monotonic clock or timers, but as we basically
931	always have timers, we just calculate it always */	1169	always have timers, we just calculate it always */
932	#if EV_USE_MONOTONIC	1170	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1171	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1172	time_update_monotonic (EV_A);
935	else	1173	else
936	#endif	1174	#endif
937	{	1175	{
938	rt_now = ev_time ();	1176	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1177	mn_now = ev_rt_now;
940	}	1178	}
941		1179
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1180	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;	1181	block = 0.;
944	else	1182	else
945	{	1183	{
946	block = MAX_BLOCKTIME;	1184	block = MAX_BLOCKTIME;
947		1185
948	if (timercnt)	1186	if (timercnt)
949	{	1187	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1188	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
951	if (block > to) block = to;	1189	if (block > to) block = to;
952	}	1190	}
953		1191
		1192	#if EV_PERIODICS
954	if (periodiccnt)	1193	if (periodiccnt)
955	{	1194	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1195	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
957	if (block > to) block = to;	1196	if (block > to) block = to;
958	}	1197	}
		1198	#endif
959		1199
960	if (block < 0.) block = 0.;	1200	if (block < 0.) block = 0.;
961	}	1201	}
962		1202
963	method_poll (EV_A_ block);	1203	method_poll (EV_A_ block);
964		1204
965	/* update rt_now, do magic */	1205	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1206	time_update (EV_A);
967		1207
968	/* queue pending timers and reschedule them */	1208	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1209	timers_reify (EV_A); /* relative timers called last */
		1210	#if EV_PERIODICS
970	periodics_reify (EV_A); /* absolute timers called first */	1211	periodics_reify (EV_A); /* absolute timers called first */
		1212	#endif
971		1213
972	/* queue idle watchers unless io or timers are pending */	1214	/* queue idle watchers unless io or timers are pending */
973	if (!pendingcnt)	1215	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1216	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1217
976	/* queue check watchers, to be executed first */	1218	/* queue check watchers, to be executed first */
977	if (checkcnt)	1219	if (checkcnt)
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1220	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1053	return;	1295	return;
1054		1296
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1297	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1298
1057	ev_start (EV_A_ (W)w, 1);	1299	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1300	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1301	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1302
1061	fd_change (EV_A_ fd);	1303	fd_change (EV_A_ fd);
1062	}	1304	}
1063		1305
…		…
1066	{	1308	{
1067	ev_clear_pending (EV_A_ (W)w);	1309	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1310	if (!ev_is_active (w))
1069	return;	1311	return;
1070		1312
		1313	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1314
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1315	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1316	ev_stop (EV_A_ (W)w);
1073		1317
1074	fd_change (EV_A_ w->fd);	1318	fd_change (EV_A_ w->fd);
1075	}	1319	}
…		…
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1322	ev_timer_start (EV_P_ struct ev_timer *w)
1079	{	1323	{
1080	if (ev_is_active (w))	1324	if (ev_is_active (w))
1081	return;	1325	return;
1082		1326
1083	w->at += mn_now;	1327	((WT)w)->at += mn_now;
1084		1328
1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1329	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086		1330
1087	ev_start (EV_A_ (W)w, ++timercnt);	1331	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1332	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1089	timers [timercnt - 1] = w;	1333	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1334	upheap ((WT *)timers, timercnt - 1);
		1335
		1336	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1091	}	1337	}
1092		1338
1093	void	1339	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1340	ev_timer_stop (EV_P_ struct ev_timer *w)
1095	{	1341	{
1096	ev_clear_pending (EV_A_ (W)w);	1342	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1343	if (!ev_is_active (w))
1098	return;	1344	return;
1099		1345
		1346	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1347
1100	if (w->active < timercnt--)	1348	if (((W)w)->active < timercnt--)
1101	{	1349	{
1102	timers [w->active - 1] = timers [timercnt];	1350	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1351	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1352	}
1105		1353
1106	w->at = w->repeat;	1354	((WT)w)->at -= mn_now;
1107		1355
1108	ev_stop (EV_A_ (W)w);	1356	ev_stop (EV_A_ (W)w);
1109	}	1357	}
1110		1358
1111	void	1359	void
1112	ev_timer_again (EV_P_ struct ev_timer *w)	1360	ev_timer_again (EV_P_ struct ev_timer *w)
1113	{	1361	{
1114	if (ev_is_active (w))	1362	if (ev_is_active (w))
1115	{	1363	{
1116	if (w->repeat)	1364	if (w->repeat)
1117	{
1118	w->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1120	}
1121	else	1366	else
1122	ev_timer_stop (EV_A_ w);	1367	ev_timer_stop (EV_A_ w);
1123	}	1368	}
1124	else if (w->repeat)	1369	else if (w->repeat)
1125	ev_timer_start (EV_A_ w);	1370	ev_timer_start (EV_A_ w);
1126	}	1371	}
1127		1372
		1373	#if EV_PERIODICS
1128	void	1374	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1375	ev_periodic_start (EV_P_ struct ev_periodic *w)
1130	{	1376	{
1131	if (ev_is_active (w))	1377	if (ev_is_active (w))
1132	return;	1378	return;
1133		1379
		1380	if (w->reschedule_cb)
		1381	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1382	else if (w->interval)
		1383	{
1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1384	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136	/* this formula differs from the one in periodic_reify because we do not always round up */	1385	/* this formula differs from the one in periodic_reify because we do not always round up */
1137	if (w->interval)
1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1386	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1387	}
1139		1388
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1389	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1390	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1142	periodics [periodiccnt - 1] = w;	1391	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1392	upheap ((WT *)periodics, periodiccnt - 1);
		1393
		1394	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1144	}	1395	}
1145		1396
1146	void	1397	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1398	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1148	{	1399	{
1149	ev_clear_pending (EV_A_ (W)w);	1400	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1401	if (!ev_is_active (w))
1151	return;	1402	return;
1152		1403
		1404	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1405
1153	if (w->active < periodiccnt--)	1406	if (((W)w)->active < periodiccnt--)
1154	{	1407	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1408	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1409	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1410	}
1158		1411
1159	ev_stop (EV_A_ (W)w);	1412	ev_stop (EV_A_ (W)w);
1160	}	1413	}
1161		1414
1162	void	1415	void
		1416	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1417	{
		1418	/* TODO: use adjustheap and recalculation */
		1419	ev_periodic_stop (EV_A_ w);
		1420	ev_periodic_start (EV_A_ w);
		1421	}
		1422	#endif
		1423
		1424	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1425	ev_idle_start (EV_P_ struct ev_idle *w)
1164	{	1426	{
1165	if (ev_is_active (w))	1427	if (ev_is_active (w))
1166	return;	1428	return;
1167		1429
1168	ev_start (EV_A_ (W)w, ++idlecnt);	1430	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );	1431	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1170	idles [idlecnt - 1] = w;	1432	idles [idlecnt - 1] = w;
1171	}	1433	}
1172		1434
1173	void	1435	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)	1436	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{	1437	{
1176	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
		1439	if (!ev_is_active (w))
		1440	return;
		1441
		1442	idles [((W)w)->active - 1] = idles [--idlecnt];
		1443	ev_stop (EV_A_ (W)w);
		1444	}
		1445
		1446	void
		1447	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1448	{
1177	if (ev_is_active (w))	1449	if (ev_is_active (w))
1178	return;	1450	return;
1179		1451
1180	idles [w->active - 1] = idles [--idlecnt];	1452	ev_start (EV_A_ (W)w, ++preparecnt);
		1453	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1454	prepares [preparecnt - 1] = w;
		1455	}
		1456
		1457	void
		1458	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1459	{
		1460	ev_clear_pending (EV_A_ (W)w);
		1461	if (!ev_is_active (w))
		1462	return;
		1463
		1464	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1181	ev_stop (EV_A_ (W)w);	1465	ev_stop (EV_A_ (W)w);
1182	}	1466	}
1183		1467
1184	void	1468	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)	1469	ev_check_start (EV_P_ struct ev_check *w)
1186	{	1470	{
1187	if (ev_is_active (w))	1471	if (ev_is_active (w))
1188	return;	1472	return;
1189		1473
1190	ev_start (EV_A_ (W)w, ++preparecnt);	1474	ev_start (EV_A_ (W)w, ++checkcnt);
1191	array_needsize (prepares, preparemax, preparecnt, );	1475	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1192	prepares [preparecnt - 1] = w;	1476	checks [checkcnt - 1] = w;
1193	}	1477	}
1194		1478
1195	void	1479	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1480	ev_check_stop (EV_P_ struct ev_check *w)
1197	{	1481	{
1198	ev_clear_pending (EV_A_ (W)w);	1482	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))	1483	if (!ev_is_active (w))
1200	return;	1484	return;
1201		1485
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];	1486	checks [((W)w)->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);	1487	ev_stop (EV_A_ (W)w);
1226	}	1488	}
1227		1489
1228	#ifndef SA_RESTART	1490	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1491	# define SA_RESTART 0
…		…
1239	return;	1501	return;
1240		1502
1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1503	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242		1504
1243	ev_start (EV_A_ (W)w, 1);	1505	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1506	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1507	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1508
1247	if (!w->next)	1509	if (!((WL)w)->next)
1248	{	1510	{
		1511	#if WIN32
		1512	signal (w->signum, sighandler);
		1513	#else
1249	struct sigaction sa;	1514	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1515	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1516	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1517	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1518	sigaction (w->signum, &sa, 0);
		1519	#endif
1254	}	1520	}
1255	}	1521	}
1256		1522
1257	void	1523	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1524	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1574	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1575	void *arg = once->arg;
1310		1576
1311	ev_io_stop (EV_A_ &once->io);	1577	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1578	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1579	ev_free (once);
1314		1580
1315	cb (revents, arg);	1581	cb (revents, arg);
1316	}	1582	}
1317		1583
1318	static void	1584	static void
…		…
1328	}	1594	}
1329		1595
1330	void	1596	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1597	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1332	{	1598	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1599	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1600
1335	if (!once)	1601	if (!once)
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1602	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1603	else
1338	{	1604	{
1339	once->cb = cb;	1605	once->cb = cb;
1340	once->arg = arg;	1606	once->arg = arg;
1341		1607
1342	ev_watcher_init (&once->io, once_cb_io);	1608	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1609	if (fd >= 0)
1344	{	1610	{
1345	ev_io_set (&once->io, fd, events);	1611	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1612	ev_io_start (EV_A_ &once->io);
1347	}	1613	}
1348		1614
1349	ev_watcher_init (&once->to, once_cb_to);	1615	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1616	if (timeout >= 0.)
1351	{	1617	{
1352	ev_timer_set (&once->to, timeout, 0.);	1618	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1619	ev_timer_start (EV_A_ &once->to);
1354	}	1620	}
1355	}	1621	}
1356	}	1622	}
1357		1623
		1624	#ifdef __cplusplus
		1625	}
		1626	#endif
		1627

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Comparing libev/ev.c (file contents): Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs. Revision 1.94 by root, Sun Nov 11 01:29:49 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.94 by root, Sun Nov 11 01:29:49 2007 UTC